Effect of different solvents on color extraction and comparative study of their color profile and antioxidant profile of Palash and Jaba flower petals

Abstract

Palash and hibiscus are used in Siddha medicine, a traditional system from India and the Southeast Asian countries of Nepal, Indonesia, Thailand, and Sri Lanka. These plants have natural health benefits that can help to cure diseases naturally. Food color from natural dyes is emerging globally as an eco-friendly colorant. This study is innovative in investigating various Solvents for using color extraction and subsequently conducting a comparative analysis of Different solvents concerning their outcomes. The color, antioxidant activity, and Phytochemicals are also thoroughly examined. There are a total of six samples prepared, and These samples of solutions were respectively 5% Citric Acid 24h (S1), 5% Citric acid 48h (S2), 5% NaOH solution 24h (S3), Glycerin with water (1:3) a time of 24h (S4), Glycerin with Water (1:3) a time of 48h (S5) and pure glycerin solution (S6). Phenolic content was high in The S7 sample in both flowers, and these values were 825.5 mg and 1778.75 mg, respectively, in 100 gm. Free radical scavenging activity (DPPH) was high in the S2 sample in both flowers; these values were 77.41% and 79.16%, respectively. Color parameters, i.e., L*, a*, b*, help to detect the lightness index, redness, and yellowness index. Principle component analysis justifies the correlation of characterization parameters of palash and jaba flower petals.  On an overall basis, it was found from the study that 5% citric acid solvent and pure glycerin solvent were considered the most effective and the highest concentration of readily accessible antioxidants and higher antioxidant Activity.